Milling-machine.



C. L. HElSLER. MILLING MACHINE. APPLICATION FILED JUNE 23,1916.

1 $39,911 1 o PatenbedSept. 11,1917.

I 3SHEETSSHEET 1.

JGC'A 1'0 6 J66 C'. L. HE ISLER.

MILLING MACHINE.

APPLICATION FILED JUNE 23; 1916.

1L 3,fl 1. Patented Sept. 11, 191?.

3 SHEETS-SHEET 2.

WITNESSES:

C. L. HEISLER.

MILLING MACHINE APPLlCATlON FILED JUNE 23, i916.

1 %9 91 1 I Patented Sept. 11, 1917.

3 SHEETSSHEET 3.

,5" w W H, m wwwsr 35 A 53 w 33 ECI 1 I we I I 30 I a 3% g, 66 i I 1 l I E vation thereof, partly in CHARLES L, I-IEISLER, 0F SCI-IENECTADY, NEW YORK.

MILLING-MACHINE.

Specification of Letters Patent.

Patented dept. llll, 191W.

Application filed June 23, 1916. Serial No. 105,325.

To all whom it may concern:

Be it known that 1, CHARLES L. HEISLER, of Schenectady, in the county of Schenectady and State of New York, have invented a certain new and useful Improvement in Milling-Machines, of which improvement the following is a specification.

y invention relates more particularly to means for trimming the projecting end of a projectile fuse set pin, and its object is to provide a machine of simple and inexpensive construction by which the end of the pin and two opposite adjacent sides thereof may be finished in a single operation; to provide means for swinging one of the milling cutters tangentially to the end of the pin and to a plane parallel with the axis of the fuse, and for swinging another cutter, during the same operation, tangentially to the sloping sides forming the outer periphcry of the fuse; to reduce the number of operations usually required for machining the sides and end of a fuse set pin; to provide automatic means for fastening the fuse at the instant before applying the milling cutters; and to hold the fuse rigidly while trimming the pin.

he improvement claimed is hereinafter fully set fortl In the accompanying drawings: Figure 1 is a side view, in elevation, of a milling ma chine embodying my invention; Fig. 2 a plan view, partly in section; Fig. 3, a vertical transverse section on the line 3-3 of Fig. 1; Fig. 4, a front end elevation; Fig. 5, a rear end elevation; Figs. 6 and 7, detail views of a projectile fuse body provided with a set pin; Fig. 8, an enlarged detail front view, partly in section, of a chuck for holding a fuse body ring; Fig. 9, a side elesection; and, Fig. 10, a plan view.

In the practice of my invention, referring descriptively to the specific structural embodiment thereof which is hereinexemplified, I provide a supporting bed or base, 1, upon which the milling mechanism is mount ed, upon which bed there are formed upwardly projecting members, 1* and 1 which support a. plurality of horizontally disposed journal bearings, 2, 2, 3, and 3, all of which are made adjustable in the usual manner. Each of a pair of superimposed swinging cutter spindle arms, 4 and 5, is pivotally supported by its corresponding horizontal shaft, 4 and 5 The shafts, P and 5 are dis spindle pulleys, 4 and 5 posed, parallel with each other, in a common inclined plane, which, for constructive convenience, may be approximately at a right angle to that portion of the inclined periphcry of the body of the fuse, 6, which is immediately adjacent to the projecting set pin, 6. The horizontal plane of the shaft, 5, includes the axis of the set pin and is at a right angle to the vertically disposed axis of the fuse body, which body is of well known and usual construction, and therefore is not described. The fuse body is securely positioned and held by a body chuck, 16, to be hereinafter described. The cutter spindles, 4 and 5 which are duplicates, are disposed parallel with each other and with the pair of parallel shafts, r and 5 and are journaled in bearings, which are fitted, with the capacity of longitudinal adjustment, in the swinging arms, 4% and 5. The cutter spindles are fitted with spindle pulleys, r and 5 and are adapted to be readily connected with, and driven by, a belt, 8, from a larger driving pulley, S. The latter pulley is fixed on a shaft, 9, which is rotated by a pulley, 10, from any suitable source of power. The shaft, 9, is mounted in a journal bearing, 9% which is formed on the upwardly projecting base member, l An idler pulley, 11, and a tightener pulley, l2,serve to guide the belt, 8, leading from the driving pulley, 8, to the The tightener pulley is supported by an arm, 13, which is pivoted on the base, by a pin, 13, and carries a counterweight, 13

The spindle arms are shown as held in their lower positions, clear of the fuse body pin, by an adjustable weight, 14-, which is suspended from the arms by the rod, 14:, and the arm link, 14, which link is coupled to the arms by the pins, 4?. and 5 A fuse body clamping spring chuck, 16, is adjustably fastened to the base by the adjusting bolts, 16, 16 and 16, in such manner as to rigidlv support the fuse, 6, when the pin, 6, is in proper milling position, relatively to the milling cutters, 24 and 25, which are fixed on the cutter spindles, 4* and 5". The operating lever, 17, is coupled, at its lower end, to the chuck, by the bracket, 19, and pin, 19, and is coupled to the spindle arm, a, by the l2 18, the pins, 18 18 and the crank arm, 20, so as to serve, on swinging it toward the left in Fig. l, to first clamp the fuse body, against the resistance due to the spring of thermore, to securely the chuck, before overcoming the resistance of the predetermined weight, 14:, to an upward swing of the arms, 4 and 5, and furhold the fuse body until the arms and the cutters have returned to their lower position indicated by the drawings. The bracket, 19, projects from the spring chuck in such relation as to locate the pin, 19, near the fuse body, which is held in the open or spring end of the chuck. The chuck is divided throughout the major portion of its length, in the usual manner, by a slot, 16 hen the lever, 17, is free, the spring of the chuck will release its grasp on the fuse body, and permit it to drop upon any suitable conveyer belt, as the belt, 21, by which it may be conveyed to the next operator.

A set blade, 22, is secured to the chuck by the bracket, 19, and bolts, 19 in position to cause a knife edge, 22, formed upon it, to engage a set mark, 6"", that is cut into the fuse body, and disposed to properly locate the pin, 6 A cutter guard, 23, is pro vided for the purpose of preventing injury to the operator.

In the operation of the machine on fuse bodies, the upper end of the body is inserted, from below, into the spring chuck and located therein by the set blade, 22. The lever, 17, is then actuated to cause the chuck to clamp the fuse before lifting the cutters, this clamping force being measured by the weight, 1 1. Further movement of the lever, toward the left, causes the cutters to be lifted upward, and into cutting action with the set pin, 6*, the cutter, 21, milling off the opposite sides of the pin, and the cutter, 25, the end thereof. A return of the lever, first lowers the cutters, and thereupon releases the body, to permit it to drop on the conveyer belt.

By substituting the ring chuck shown in Figs. 8, 9, and 10, the set pin, 30, on a fuse ring 30, may be milled, by placing the ring upon the downwardly projecting end of the vertically disposed spring chuck mandrel, 31, which is coupled to, and lifted by, the lever, 32, when moved toward the left. This lever is pivoted at its upper end, by the pin, 33', on the slotted chuck sleeve, 34. The bell crank, 35, is pivoted 0n the upper forked end of the lever, by the pin, 35 and is coupled to the link, 18, by the pin, 35". The movement of the link, 18, toward the left, is resisted, as already described, by the weight, 14, and the arms, 4 and 5. This horizontally directed resistance is transformed by the bell crank into a vertical pull,

and is transmitted by the horizontal arm of the bell crank, and the upper slotted sleeve end, 31*, to the spring chuck mandrel, 31, thereby causing the lower taper slotted end of the mandrel to expand on the pin, 36,

4 and grip the bore of the ring, 30. Further movement lifts the ring tightly against the under face, 37, of the chuck bracket, 37, with a force measured by the weight of the arms, 1 and 5, and the weight, 14. The grip on the bore of the ring, is measured by the resistance of the spring, 38, which acts through the movable slotted bush, 39, and the pin, 36, fastened in the bush at the lower end of the slot, to expand the tapered slotted end of the mandrel, 31. Continued motion of the lever, '32, toward the left, will cause a corresponding motion of the link, 18, and will lift the milling cutters into cutting actionwith the pin, 30, in the same manner as when trimming the body pins already described.

I claim as my invention and desire to secure by Letters Patent:

1. A milling machine comprising a swinging cutterarm, a work-holding chuck, and movable means connected to said arm and to said chuck in such a way that movement of said means in one direction will first cause the chuck to grip the work and then swing the arm to cause the cutter to engage the work, and movement of said means in the other direction will first swing the arm away from the work and then cause the chuck to release the work.

2. A milling machine comprising a swinging cutter arm, a work-holding chuck, a

lever pivoted on said chuck, and a link connection between said lever and said arm, whereby actuation of said lever will first cause the chuck to grip the work and then cause said arm to bring the cutter into engagement with the work.

3. A milling machine comprising a vertically swinging weighted cutter arm, a spring chuck, and connections between said lever and said arm, whereby actuation of said lever first closes the chuck on the work against the spring resistance thereof and the weight of the arm, the cutter into engagement with the work.

4:. A milling machine comprising a pair of parallel swinging arms, cutter spindles journaled in the free ends of said arms, cutters mounted on said spindles, means to rotate the latter, a work-holding chuck, a manually operable lever, and connections between said lever and said chuck and arms, such that actuation ofsaid lever first grips the chuck on the work and then swings said a lever pivoted on saidchuck, 1

and then raises the latter to bring arms to cause the cutters to engage the work.

5. A milling machine comprising .a pair of superposed vertically swinging arms, rotary cutters journaled in the free ends of the same, a stationary spring chuck, a-lever pivotally connected at its lower end to said chuck, a link pivotally connected at one end to said lever, connections between said link and said arms, and an adjustable weight suspended from said arms, whereby,

when said lever is actuated, the pivotal connection of said link therewith first acts as its fulcrum and the chuck is caused to grip the work, and then the pivotal connection of the lever with the chuck becomes its fulcrum and the arms are raised to bring the cutters into engagement with the work.

6. A milling machine comprising a frame, a work-gripping chuck adjustably mounted thereon, a horizontal shaft journaled in said frame, an arm on said shaft, a spindle adjustably journaled in the free end of said arm, a cutter on said spindle, means to rotate said cutter, a crank on said shaft, a lever pivoted on said chuck, and a link connecting said lever and said crank, whereby actuation of said lever first causes said chuck to grip the work and then raises said arm to bring said cutter into engagement with the work.

7 A milling machine comprising a frame, a work-gripping chuck adjustabl mounted thereon, a pair'of parallel horizontal shafts journaled in said frame at different heights, an arm mounted on each of said shafts one above the other, \a, link connecting said arms, rotary cutters carried by said arms, a crank on one of said shafts, and a link connecting said lever and said crank, whereby actuation of said lever first causes said chuck to grip the work and then raises said arms to bring said cutters into engagement with the work.

8. A milling machine comprising a frame, a spring chuck mounted thereon, a lever pivotally connected to one jaw of said chuck, a pair of horizontal shafts mounted in said frame in different horizontal planes, an arm fast on each of said shafts and projecting therefrom in the same vertical plane, rotary cutters carried in the free end of said arms, a link connecting said arms, a weight suspended therefrom, a crank on one of said shafts, and a link pivotally connected at Copies of this patent may be obtained for five cents each, by

one end to said lever and at the other end to said crank, whereby actuation of the lever first closes the chuck on the work with a force dependent upon the weight of said arms, and then raises the latter to bring the cutters into engagement with the work.

9. A milling machine of the class described, comprising a vertical work-gripping chuck, a vertically swinging arm, a rotary cutter carried by said arm, a manually operable lever, and connections between said lever and said chuck and between said lever and said arm, such that, in the first part of the movement of said lever, its fulcrum is its point of connection with said arm and said chuck is caused to grip the work and, thereafter, its fulcrum is its point of connection with said chuck and said arm is swung upwardly to bring said cutter into engagement with the work.

10. A milling machine of the class described, comprising a vertical work-gripping chuck, a traveling conveyer beneath the same, a vertically swinging arm, a rotary cutter carried by said arm, a manually operable lever, and connections between said lever and said chuck and between said lever and said arm, such that, in the first part of the movement of said lever, its fulcrum is its point of connection with said arm and said chuck is caused to grip the work and, thereafter, its fulcrum is its point of connection with said chuck and said arm is swung upwardly to bring said cutter into engagement with the work, and movement of said lever in the opposite direction first releases the work and allows it to drop onto said conveyer, and then lowers said arm.

CHARLES L. HEISLER.

Witnesses:

RALPH B. BURTON, ELIZABETH R. FINEGAN.

addressing the Commissioner of Patents- Washington, D. G. 

